Can you explain the difference between a sample and a population in statistics?
Sure! A population includes all members of a defined group, while a sample is a subset of that population.
Can you give me an example of a population and a sample?
Absolutely! If we consider all the students in a school as the population, then a class of 30 students would be a sample.
Why is it important to use a sample instead of the whole population?
Using a sample is often more practical and cost-effective, especially when the population is large or difficult to access.
How do researchers ensure that a sample is representative of the population?
Researchers use techniques like random sampling to ensure that every member of the population has an equal chance of being included.
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